Siemens OpenAir ASK791.165 Bedienungsanleitung

Installation Instructions

Document No. A6V11200850

May 1, 2018

OpenAir™ Electronic Fusible Link

Used with Siemens Fire and Smoke

Damper Actuators

Item number A6V11200850, Rev. DA Page 1 of 4

Product Description

The Electronic Fusible Link (EFL) is a heat responsive

device used with the Siemens OpenAir™ UL listed fire

and smoke control damper actuator.

Upon approaching the temperature rating of the EFL

model ordered and installed, the EFL cuts power to the

electronic damper actuator and the actuator’s spring

return mechanism closes the damper.

NOTE: The EFL must be factory-installed. The UL

rating carried by the specific damper and

actuator is assigned as an assembly and

cannot be added in the field.

Replacement EFLs may be field-installed with local

authority approval.

Contents

•Electronic Fusible Link

•Two 1.5-inch (38.1 mm) No. 8 pan head self-drilling

screws

Product Numbers

ASK791.165 165°F (74°C)

ASK791.212 212°F (100°C)

ASK791.250 250°F (121°C)

ASK791.350 350°F (177°C)

NOTE: The EFL is compatible only with OpenAir GJD,

GRD, GKD, or GVD fire and smoke damper

actuators.

Warning/Caution Notations

WARNING:

Personal injury or loss of life may

occur if you do not follow the

procedures as specified.

CAUTION:

Equipment damage may occur if

you do not follow the procedures

as specified.

Required Tools

•1-3/8-inch (35 mm) drill or hole punch

•No. 2 Phillips bit

Expected Installation Time

15 minutes

Prerequisites

Appropriate OpenAir GJD, GRD, GKD, or GVD series

damper actuator.

Operation

When the EFL detects that its temperature rating is

being approached, the power to the electronic damper

actuator is shut off and the spring mechanism closes the

damper.

NOTE: Depending on the application environment, the

EFL may trip before the listed temperature

rating.

The manual override reset button (see Figure 1) on the

EFL can be pressed when the temperature has cooled

below the EFL setpoint. The EFL device will again be

operational.

Figure 1. Parts Description.

Document No. A6V11200850

Installation Instructions

May 1, 2018

Page 2 of 4 Siemens Industry, Inc.

Operation, Continued

CAUTION:

Before resetting any sensor, carefully

inspect the damper, damper actuator, and

sensor. Verify whether or not local

authorities or building managers must be

contacted.

Damage to the temperature sensor will

result in loss of damper control.

WARNING:

Before attempting to reset the EFL by

pressing the Override/reset button, take

the precaution to protect exposed skin as

the EFL will be extremely hot to the touch.

Installation

Figure 2. The EFL and OpenAir Fire and Smoke Damper

Actuator.

WARNING:

The internal/external mounting orientation

or position in the duct will affect the time

and/or temperature the EFL requires to

switch.

NOTE: Notice the position of the top clip before

attempting to couple the actuator with the EFL

sensor.

Figure 3. Proper Clip Positioning.

Internal Mounting

For internal mounting, the reset button must protrude

through a 3/8-inch (9.5 mm) diameter relief hole

providing operator access for resetting the EFL.

CAUTION:

Failure to provide a relief hole will keep

the reset button pressed against the duct

wall or damper sleeve, and the EFL will

fail to operate as intended.

Document No. A6V11200850

Installation Instructions

May 1, 2018

Siemens Industry, Inc. Page 3 of 4

Internal Mounting, Continued

Figure 4. EFL Reset Button Relief Hole.

CAUTION:

Exceeding the specified mounting screw

torque may damage the housings.

External Mounting

For external mounting, make a 1-3/8-inch (35 mm)

diameter hole in the duct wall or damper sleeve. The

sensor will protrude into the duct or damper for proper

temperature sensing.

Figure 5. Providing Proper Sensor Temperature

Detection Access.

CAUTION:

Exceeding the specified mounting screw

torque may damage the housings.

Document No. A6V11200850

Installation Instructions

May 1, 2018

Information in this publication is based on current specifications. The company reserves the right to make changes in specifications and models as

design improvements are introduced. OpenAir is a trademark of Siemens Schweiz, AG. Other product or company names mentioned herein may be the

Siemens Industry, Inc.

Building Technologies Division

1000 Deerfield Parkway

Buffalo Grove, IL 60089

+ 1 847-215-1000

Your feedback is important to us. If you have comments

about this document, please send them to

sbt_technical.editor.us.sbt@siemens.com

Document No. A6V11200850

Printed in the USA

Page 4of 4

Dimensions

Figure 6. Dimensions in Inches (mm).

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